I used to do some competition rifle.
I got into handguns this past year, bears on my immediate property and everyday living space being the general reason.
Boy is this different, I may throw a fit if I was shooting 1" groups at 100 yards with my rifle, but boy I'm lucky to hit worth a hoot with a handgun.
I've got a 3" 1911 9mm as my everyday people repeller, 4" 500 S&W as my everyday bear/animal repeller.
The 1911 points very naturally, I can shoot on my property, 8" steel plates out to 15-16 yards, then 10" plates at 19-20.
I don't even hit the 8" steel plates all the time, not even close.
You go from shooting eyeballs at 200yds with a rifle to shooting a basketball at 20 yards with a handgun and it'll kill your confidence quick.
Then you run the math, say 5" sight radius, say you're off with the sights by 1/16". The front blade is a touch high, a tough low, a touch left/right etc...
16 * 5 = 80" Every 80" you're off 1" with that. That's every 6.67' you're off by 1", that's 2.22 yards
So, at that 7 yards, if your sight alignment is off 1/16 of an inch, you're missing by 3".
Say your first shot your front sight is high, you miss 3" high, DANGIT!!! don't shoot high, boom, front sight blade was low 1/16" this time, overcompensated, 3" low.
Your group is now 6" at 7 yards and you've only shot twice, sight alignment only 1/16" off with any given shot. Now take ammo consistency, firearm accuracy, and so on into account, jesus, even the size of the sight dot. That group being 6" because you were off with your sight alignment by 1/16 means it would be 3" with only 1/32 sight misalignment. Times that by 3 to get 21 yards and your group is 9" with 1/32" sight "misalignment" in a couple directions. Are people really holding that steady, off hand, to hold 8" groups at 25 yards... or better yet, the 4" "headshot" sized groups so many claim.
I figure this handgun thing isn't as simple as people seem to say...
Anyway, my plan for bear is simple, I get 1, that's it, 1 shot, hit, period, whether that shot is at 10 feet or 1 foot, plan for 1 and plan to make it count. Any others will be with the bear on top of me. That's my plan.